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A kind of phenol wastewater treatment method

A waste water treatment, waste water technology, applied in the direction of water/sewage treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., can solve the problems of low industrialization, immaturity, and few research results of solar energy utilization methods , achieve the effect of saving energy and breaking limitations

Active Publication Date: 2021-12-21
NORTHEAST GASOLINEEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, research results on solar energy utilization methods are less, less mature, and less industrialized

Method used

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  • A kind of phenol wastewater treatment method
  • A kind of phenol wastewater treatment method
  • A kind of phenol wastewater treatment method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0099] The phenol wastewater treatment method of the present embodiment comprises the steps:

[0100] Heat the sealed reactor to 150°C in advance through the thermal energy provided by the solar concentrating heat collector. The reactor is provided with a liquid inlet for adding phenol wastewater, and the phenol wastewater is discharged through the temperature-resistant liquid inlet pipe arranged on the liquid inlet. Added into the reactor, the concentration of phenol wastewater is 500mg / L (referring to the phenol content is 500mg / L), and the phenol wastewater reaches the boiling point and vaporizes after entering the reactor, turning into phenol water vapor.

[0101] Through the electric energy provided by the photovoltaic cell, a direct current is passed into the phenol water vapor in the reactor to electrolytically oxidize the vapor state phenol. The electrolytic oxidation adopts a bipolar system, and both the cathode and the anode are nickel electrodes. The electrolysis t...

Embodiment 2 to Embodiment 9

[0103] The processing methods of Embodiment 2 to Embodiment 9 are basically the same as Embodiment 1, except that the electrolysis voltages are 2V, 3V, 4V, 5V, 6V, 7V, 8V and 9V respectively.

[0104] It was found that almost no current was generated in the reactors of Examples 1 to 4, and phenol could not be effectively electrolyzed under the condition of 150°C / <5V.

[0105] figure 1It is the ultraviolet spectrogram after the degradation of the phenol waste water of embodiment 5 to embodiment 9. from

[0106] figure 1 It can be seen that when the electrolysis voltage is 5V, compared with the characteristic absorption peak of phenol before degradation, the decrease is more significant, and there is an absorption peak between 260-265nm, which may be due to the incomplete oxidation of phenol during the degradation process. caused by the product. When the electrolysis voltage increased to 6V, 7V, 8V, the characteristic absorption peak of phenol decreased more obviously. Fina...

Embodiment 10

[0109] Embodiment 10 is substantially the same as Embodiment 9, the difference is:

[0110] Heat the sealed reactor to 170°C in advance with the heat energy provided by the solar concentrating heat collection device;

[0111] The electrolysis temperature is 170°C, and the thermal energy provided by the solar concentrating heat collection device continues to provide the required temperature environment for electrolysis.

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Abstract

The invention relates to a method for treating phenol wastewater. The method comprises: (1) a step of vaporizing phenol waste water with heat energy provided by a solar concentrating heat collection device to form phenol water vapor; and (2) a step of electrolytically oxidizing the phenol water vapor with electric energy provided by a photovoltaic cell . The present invention realizes the degradation of vapor state phenol for the first time, and degrades phenol in the vapor phase to achieve an ideal degradation rate of phenol; in addition, the activated molecules in the excited state with high energy content can undergo less intermediate incomplete oxidation The products are oxidized to carbon dioxide and water with simultaneous production of hydrogen. The invention does not introduce any other form of energy during the electrolysis period, realizes the utilization of the full spectrum of solar energy, breaks the limitation of the traditional photovoltaic method on the utilization of sunlight, truly achieves the purpose of environmental friendliness, and realizes on the basis of energy saving The degradation of phenol wastewater is achieved, which provides a new direction for the green and efficient treatment of industrial organic wastewater.

Description

technical field [0001] The invention relates to the technical field of organic wastewater treatment, in particular to a method for treating phenol wastewater. Background technique [0002] Phenol is one of the most common pollutants in industrial wastewater. Due to the heavy use of plastics, varnishes, pharmaceuticals, textiles, metallurgical products, petroleum, natural gas and coke ovens, of which phenol is involved in some stages of the production process, almost all wastewater from these industrial installations contains phenol or phenolic compounds . This has led to more and more people around the world beginning to pay attention to the source of phenol pollution. [0003] In the current research, the treatment methods of phenol wastewater at home and abroad mainly include physical method, biological method, chemical oxidation method and electrochemical method. The physical method uses a physical separation method to collect phenol in phenol wastewater to realize the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/10C02F101/34
CPCC02F1/14C02F1/4672C02F2101/345
Inventor 苑丹丹朱凌岳吴红军王宝辉纪德强庄微
Owner NORTHEAST GASOLINEEUM UNIV
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